About: Embryonic shells in some lechritrochoceratids (Nautiloidea, Barrandeocerina)

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About: Embryonic shells in some lechritrochoceratids (Nautiloidea, Barrandeocerina) Goto Sponge NotDistinct Permalink

An Entity of Type : http://linked.opendata.cz/ontology/domain/vavai/Vysledek, within Data Space : linked.opendata.cz associated with source document(s)

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rdf:type	skos:Concept http://linked.opendata.cz/ontology/domain/vavai/Vysledek
Description	Knowledge on the early ontogeny of lechritrochoceratids (Tarphycerida, Barrandeocerina), possible ancestors of Nautilida, is extended expanded. The outer morphology of the embryonic shell in Kosovoceras sandbergeri (Barrande, 1865), Peismoceras pulchrum (Barrande 1865), Calocyrtoceras cognatum (Barrande, 1866) and C. simulans (Barrande, 1865) is described; the systematic position of Calocyrtoceras within this group is substantiated. Common features of these nautiloids are cyrtocone shells, a bowl-shaped blunt apex, the absence of nepionic constriction and a reticulate sculpture with dominating longitudinal lirae. The appearance of annuli on the surface is interpreted as the beginning of post-hatching phase. The embryonic shell of the Silurian tarphycerid Boionautilus bohemicus (Barrande, 1865) from the family Uranoceratidae is discussed for a comparison. Knowledge on the early ontogeny of lechritrochoceratids (Tarphycerida, Barrandeocerina), possible ancestors of Nautilida, is extended expanded. The outer morphology of the embryonic shell in Kosovoceras sandbergeri (Barrande, 1865), Peismoceras pulchrum (Barrande 1865), Calocyrtoceras cognatum (Barrande, 1866) and C. simulans (Barrande, 1865) is described; the systematic position of Calocyrtoceras within this group is substantiated. Common features of these nautiloids are cyrtocone shells, a bowl-shaped blunt apex, the absence of nepionic constriction and a reticulate sculpture with dominating longitudinal lirae. The appearance of annuli on the surface is interpreted as the beginning of post-hatching phase. The embryonic shell of the Silurian tarphycerid Boionautilus bohemicus (Barrande, 1865) from the family Uranoceratidae is discussed for a comparison. (en)
Title	Embryonic shells in some lechritrochoceratids (Nautiloidea, Barrandeocerina) Embryonic shells in some lechritrochoceratids (Nautiloidea, Barrandeocerina) (en)
skos:prefLabel	Embryonic shells in some lechritrochoceratids (Nautiloidea, Barrandeocerina) Embryonic shells in some lechritrochoceratids (Nautiloidea, Barrandeocerina) (en)
skos:notation	RIV/00023272:_____/10:#0001319!RIV11-MK0-00023272
http://linked.open...avai/riv/aktivita	P
http://linked.open...avai/riv/aktivity	P(DE06P04OMG009)
http://linked.open...vai/riv/dodaniDat	2011
http://linked.open...aciTvurceVysledku	Turek, Vojtěch
http://linked.open.../riv/druhVysledku	C - Kapitola v knize
http://linked.open...iv/duvernostUdaju	S - Úplné a pravdivé údaje nepodléhající ochraně podle zvláštních právních předpisů
http://linked.open...titaPredkladatele	Národní muzeum
http://linked.open...dnocenehoVysledku	256968
http://linked.open...ai/riv/idVysledku	RIV/00023272:_____/10:#0001319
http://linked.open...riv/jazykVysledku	eng - angličtina
http://linked.open.../riv/klicovaSlova	embryonic shell; Lechritrochoceratidae; Nautiloidea; Silurian; Tarphycerida (en)
http://linked.open.../riv/klicoveSlovo	embryonic shell Lechritrochoceratidae Tarphycerida Nautiloidea Silurian
http://linked.open...ontrolniKodProRIV	[07209E35E25A]
http://linked.open...i/riv/mistoVydani	Tokio, Japonsko
http://linked.open...i/riv/nazevZdroje	Cephalopods: Present and Past
http://linked.open...in/vavai/riv/obor	DB
http://linked.open...ichTvurcuVysledku	1 (xsd:int)
http://linked.open...v/pocetStranKnihy	314 (xsd:int)
http://linked.open...cetTvurcuVysledku	1 (xsd:int)
http://linked.open...vavai/riv/projekt	Sceintific and muzeological revision and documentation of selected parts of type material from the collectios of the Paleontological department of the National Museum, Prague
http://linked.open...UplatneniVysledku	2010
http://linked.open...iv/tvurceVysledku	Turek, Vojtěch
number of pages	8 (xsd:int)
http://purl.org/ne...btex#hasPublisher	Tokai University Press
https://schema.org/isbn	978-4-486-01876-6

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